Thanks MrFence.
"Because you always buy on the ask side, a pink sheet security can trade at or below your buy limit and not trigger an execution of your order.
Conversely, because the bid must rise to your sell limit price, a pink sheet stock can trade at or above your sell limit and not execute your order. "
I also use TDAmeritrade. One think i have noticed is that before we had R/S it was easier to buy at the bid and sell at the ask.
After R/S even when i put my order to buy above the Bid market my order never got filled!
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